Missy Franklin:

Missy "The Missile" Franklin won four gold medals at the London Olympics at the ripe age of 17. Since then, Franklin spent two years at CAL before turning pro to focus on the Rio Olympics. She plans on still finishing her Berkeley degree after spending time on Bob Costas' couch this summer.

Alexander Massialas:

Alexander Massialas (R) of the United States in the bronze medal match in 2012.(photo by Hannah Johnston)

Alexander Massialas, a San Francisco native and Stanford student, is the favorite to win the gold in Men's Foil Fencing.

Marti Malloy:

Marti Malloy of the United States celebrates winning the bronze medal in 2012. (photo by Julian Finney)

San Jose State product Marti Malloy will try to improve on the Bronze medal she won in Judo back in 2012.

John Mann:

John Mann poses with his USA polo cap earlier this year. (photo by Sean Haffey)

John Mann led the 2006 CAL Bears to a national championship. In 2012, Mann scored three goals at the London Olympics. The U.S. finished eighth that year.

Danny Barrett:

Danny Barrett makes a pass on Team USA. (photo by Hannah Peters)

Danny Barrett was a four-time All-American at CAL. Before starring in Berkeley, Barrett attended Sacred Heart Cathedral in San Francisco. Rio de Janeiro will be his first Olympic Games.

Alex Morgan, Kelley O' Hara, Julie Johnston:

Alex Morgan controls the ball in a match versus UC Davis during her college days. (photo via the Daily Cal)

Alex Morgan played soccer at CAL for four years from 2007 to 2010. Today, she is a superstar on the Women's National Team, both as a player and as a spokesperson for women's athletics in general. Stanford alum Kelley O' Hara and Santa Clara alum Julie Johnston will also play with Morgan in Rio.